Knowledge centre — materials, selection and use
Make a more informed shortlist. Explore practical guides to materials, dimensions, product selection and everyday use.
LDPE 04 identifies low-density polyethylene. It helps describe the material used in packaging, but it is not a quality grade, food-contact approval or guarantee that a used item will be recycled.
What does the code mean?
LDPE is the abbreviation for low-density polyethylene, commonly associated with material identification number 4 or 04. It is used in many flexible films and bags. The code identifies the polymer family; it does not establish film thickness, recycled content, chemical resistance or a product’s safe-use conditions.
Why identify the material?
Clear identification helps people in the supply and waste chains distinguish one material from another. Packaging identification systems, including the European framework associated with Decision 97/129/EC, support consistent communication. Specific marking obligations and designs depend on the applicable rules and market. Do not treat a generic symbol as proof of compliance with every country’s packaging law.
How might the mark appear?
Packaging may show 4 or 04, the letters LDPE and an associated recycling or material-identification graphic. Read these as information about the actual article. A familiar symbol does not guarantee that a local collector accepts it, that it contains recycled material or that it will biodegrade.
Where is LDPE used?
Flexible packaging films, resealable bags, liners and other soft polyethylene articles are common examples. Similar-looking films can use different polymers, blends or layers, so appearance alone is insufficient. Read the product’s identification and specification instead of assuming all stretchable plastic is the same.
SMART and STRONG
Protectmedical SMART zipper bags are identified by a red line above the closure. STRONG has no red line and carries an LDPE marking above the seal. Q40 and Q50 are range names, not independent confirmation of a measured thickness. The mark does not make one range universally stronger, food-safe or recyclable in every collection system.
Sorting a used bag
Empty the bag and follow local or business waste instructions. Contamination, coatings and other components can affect acceptance. Plastic packaging collection in Poland commonly uses yellow bins, but professional waste contractors and other countries may have different rules. Hazardous contamination requires an appropriate separate route.
Reuse and responsible claims
Reuse an intact bag only if its previous contents and the task’s hygiene requirements allow it. Avoid blanket claims such as fully ecological, guaranteed recycled or harmless in every use without evidence. Ask for the relevant product documents and waste guidance rather than relying on the graphic alone.
From identification to purchasing
Use material, dimensions, closure and pack quantities together when comparing products. The English catalogue links to current SMART and STRONG product records. Send the required formats, quantities, contact conditions and delivery location to Protectmedical for a defined business enquiry.
Practical guides
What are disposable HDPE gloves made from?
HDPE gloves are made from thin high-density polyethylene film. The material is lightweight, stiffer and less stretchable than nitrile or latex, so the finished glove has a loose fit.
Read the guide →Are HDPE gloves stretchy?
HDPE film has limited stretch compared with latex or nitrile. The glove should not fit tightly: it is designed for quick donning, a simple task and replacement.
Read the guide →HDPE, CPE and TPE gloves: what is the difference?
HDPE, CPE and TPE are different material options. Comparing the unit price alone does not establish which is appropriate.
Read the guide →Are HDPE gloves suitable for food contact?
HDPE alone does not automatically approve every article for every food. Check the specific glove’s declaration of compliance, contact conditions and limitations before purchasing.
Read the guide →Where should HDPE gloves be used?
HDPE gloves suit short tasks requiring a basic, quickly replaced barrier between the hand and the product or surface dirt.
Read the guide →Do HDPE gloves protect against viruses, bacteria and chemicals?
A typical thin-film HDPE glove for short tasks should not be presented as universal biological or chemical protection. Its loose cuff, seams and thin film limit its applications.
Read the guide →How to choose the size of HDPE gloves
HDPE gloves should fit more loosely than nitrile or latex, without slipping excessively or obstructing grip. Protectmedical therefore offers four sizes: S, M, L and XL.
Read the guide →How to put on, remove and change HDPE gloves
Separate the glove at the designated tear-off point without tugging the seams. Insert a clean, dry hand and check that the film is undamaged.
Read the guide →HDPE gloves and recycling: where should used gloves go?
HDPE can be recycled as a material, but that does not mean every used glove will be recycled. Contamination, the way it was used, the waste contractor and local collection rules determine the route.
Read the guide →What are nitrile gloves made from? Understanding NBR
Nitrile gloves are made from synthetic nitrile rubber, or NBR. The material name matters, but it does not describe every property of the finished glove.
Read the guide →Powdered or powder-free gloves: what is the difference?
PF means powder-free. Consider this feature separately from the glove material, sterility and protection performance.
Read the guide →How to choose nitrile glove sizes XS–XL
Correct sizing supports grip and comfort and reduces the strain that can damage an overstretched glove.
Read the guide →Which chemicals can nitrile gloves protect against?
There is no reliable universal list of substances resisted by every nitrile glove. Protection must be assessed for the specific model and working conditions.
Read the guide →Nitrile gloves, viruses and bacteria: understanding the barrier
Gloves can provide a barrier that reduces hand contact with biological material when they are appropriate, intact and used correctly.
Read the guide →What does AQL 1.0 or 1.5 mean for gloves?
AQL describes an acceptance quality level used in batch inspection. A value of 1.0 or 1.5 is not a guaranteed percentage of defective gloves in every box.
Read the guide →Can nitrile gloves cause allergies? Caring for your hands
Calling all nitrile gloves hypoallergenic goes too far. Nitrile avoids natural rubber latex proteins, but does not eliminate every possible cause of a reaction.
Read the guide →How to put on and safely remove disposable gloves
Correct removal reduces the risk of transferring contamination from the outside of the glove to your skin.
Read the guide →How often should nitrile gloves be changed? Can they be reused?
Single-use examination gloves are not designed to be washed, disinfected or put on again.
Read the guide →Nitrile gloves for beauty salons and tattoo studios
Nitrile is widely used in beauty and tattoo work for its fit, grip and absence of natural rubber latex proteins. It does not automatically protect against every preparation or a needle puncture.
Read the guide →Are nitrile gloves suitable for food contact?
Not every nitrile glove is automatically intended for contact with every type of food.
Read the guide →Nitrile gloves in the workshop: oils, grease and selecting protection
Black nitrile can be a practical visual choice in a workshop. Neither the colour nor the material name confirms resistance to all oils, greases and solvents.
Read the guide →Embossed film on bags on rolls: texture and performance
Embossing is a surface texture: small raised and recessed areas that are particularly visible in light from the side. Assess it alongside film thickness, handles and seals. Appearance alone does not establish a bag’s load capacity.
Read the guide →T-shirt bag handles: carrying everyday purchases
Bags on rolls with integral handles are used for produce and small purchases. When selecting them for a store, assess the handles and the film where they join the body of the bag.
Read the guide →How to separate and open bags on a roll
Bags on rolls allow individual bags to be dispensed for produce and small purchases. Finding the end, separating a bag and opening it are worth testing when choosing store packaging.
Read the guide →SMART or STRONG bags on rolls: choosing for your store
SMART and STRONG are two Protectmedical HDPE T-shirt bag ranges. Both measure 22/12 × 43 cm. Film thickness differs, and each range offers 100- or 160-bag rolls.
Read the guide →100 or 160 bags per roll: comparing quantity and cost
100 or 160 means the number of bags on one roll. It does not describe the bag dimensions or film thickness. SMART 6.5 µm and STRONG 9.5 µm both offer these quantities at 22/12 × 43 cm.
Read the guide →Polyethylene front aprons: covering clothing from moisture and dirt
A disposable front apron covers the front of clothing. It is useful during preparation, portioning and packing in food service, processing and retail. Material, coverage and correct donning matter.
Read the guide →HDPE apron performance: flexibility and resistance to tearing
Protectmedical HDPE aprons combine low weight with the flexibility needed for everyday movement. Assess the complete article: film, cut, ties and fit around the wearer.
Read the guide →How to put on a polyethylene apron and check an 81 × 125 cm fit
A front apron should cover clothing while allowing normal movements. The neck opening and waist ties help achieve a comfortable fit. 810 × 1250 mm is the same format as 81 × 125 cm.
Read the guide →Polyethylene aprons, food contact, CE marking and intended use
Dimensions and colour are not the only considerations in food service and processing. Intended use and documentation matter. The Protectmedical offer lists food-contact suitability, CE marking and Category I protection.
Read the guide →White or blue polyethylene aprons: choosing a workplace colour
Apron colour can help distinguish teams and workstations. Protectmedical offers standard white and blue made to order. Start with the colour system used by your business.
Read the guide →Aprons in packs of 100 or cartons of 1,000: planning trade orders
It is easy to confuse a price per apron with a pack or carton price. Protectmedical catalogue packs contain 100 front aprons; outer cartons contain 1,000.
Read the guide →SMART and STRONG bags on rolls: size, thickness and roll quantity
Protectmedical bags on rolls share one format, 22/12 × 43 cm, with four configurations: SMART 6.5 µm or STRONG 9.5 µm, each with 100 or 160 bags.
Read the guide →Understanding the SMART Q40 zipper bag range
SMART Q40 is Protectmedical’s everyday LDPE zipper bag range. Its identifying feature is the red line above the closure; available formats include the hanging hole shown on the product card.
Read the guide →Disposable polyethylene aprons, 810 × 1250 mm
Protectmedical disposable front aprons are film covers worn over clothing. The 810 × 1250 mm format covers the front of the wearer and is offered in packs of 100.
Read the guide →What are vinyl gloves made from?
Vinyl gloves are made from polyvinyl chloride, or PVC. Additives, including plasticisers, allow this otherwise rigid polymer to form a soft glove.
Read the guide →Vinyl or nitrile gloves: when should you choose each?
Vinyl can be an economical option for short tasks with frequent glove changes. Nitrile generally fits more closely and is often chosen where grip matters.
Read the guide →Why do vinyl gloves fit differently from latex?
Natural rubber latex is an elastic rubber; vinyl is PVC softened with additives. This difference affects the fit around the hand.
Read the guide →Where are vinyl gloves most useful?
Vinyl is best considered for short, simple, low-risk tasks in which gloves are changed frequently.
Read the guide →Vinyl gloves with fats and oils: what should you check?
Do not assume that every vinyl glove is suitable for fats. Plasticisers and other constituents are subject to migration requirements.
Read the guide →Do vinyl gloves protect against viruses and chemicals?
Biological and chemical protection cannot be judged from the word vinyl alone. The finished product, intended use and documentation matter.
Read the guide →Vinyl gloves, latex allergy and skin irritation
Vinyl is an alternative for people avoiding natural rubber latex proteins. The FDA lists PVC alongside nitrile and polyurethane as synthetic materials.
Read the guide →Powdered or powder-free vinyl gloves?
Powder was used to make gloves easier to put onto damp hands. Powder-free, or PF, versions suit workstations where surface cleanliness matters.
Read the guide →How to size and put on vinyl gloves without tearing them
Do not select vinyl gloves on the assumption that they will stretch considerably. The fit should suit the task without pulling tight across the knuckles and cuff.
Read the guide →What are latex gloves made from?
Latex gloves are made from natural rubber derived from the milky sap of the rubber tree, Hevea brasiliensis.
Read the guide →Latex or nitrile gloves: which offers better touch sensitivity?
Latex often provides a close fit and good touch sensitivity, but no material is best for every job.
Read the guide →Why can latex gloves feel like a second skin?
Second skin describes a close-fitting sensation. It does not mean there is no barrier, or guarantee protection.
Read the guide →Where are latex gloves most useful?
Latex is considered where grip, elasticity and precision matter. Allergy, sterility and the requirements of the particular task must always be considered.
Read the guide →Latex gloves with fats, oils and solvents
Natural rubber latex is not a universal material for oils, fats and solvents.
Read the guide →Do latex gloves protect against viruses and bacteria?
Latex can provide an effective barrier in a suitable finished product. It does not offer an unconditional guarantee against every microorganism.
Read the guide →Latex allergy: symptoms and what to do
Not every patch of redness is an allergy, but symptoms following contact with latex should not be ignored.
Read the guide →Powdered or powder-free latex gloves?
With latex, powder is more than a question of easy donning. It can carry natural latex proteins into the air.
Read the guide →How to choose latex glove sizes XS–XL
Latex elasticity is not a reason to deliberately choose gloves that are too small.
Read the guide →How to remove latex gloves safely
Close-fitting latex should be removed calmly, without tugging sharply or snapping the cuff.
Read the guide →Nitrile, vinyl or latex gloves: which should you choose?
Nitrile, vinyl and latex meet different needs. Start with the task, contact conditions and fit, then consider colour and pack cost.
Read the guide →A history of gloves: from natural rubber to vinyl and nitrile
From made-to-measure rubber gloves to today’s disposable models, hand protection has developed around the balance between a barrier, comfort and the wearer’s needs.
Read the guide →Drawstring mesh sacks: a practical FAQ
Raschel mesh sacks are open-structure plastic packaging used in agriculture, horticulture and wholesale handling. Their ventilation, visible contents and drawstring closure distinguish them from closed-film bags.
Read the guide →Rubber bands: uses, durability and care — FAQ
Rubber bands serve offices, warehouses, households, horticulture and packing operations. Choose by dimensions, the object being bundled and the conditions of use.
Read the guide →SMART and STRONG zipper bags: the Protectmedical range
Protectmedical supplies resealable LDPE zipper bags directly to wholesalers, retail chains and manufacturers. Compare SMART and STRONG by their identifying features, dimensions and the specification required for your process.
Read the guide →SMART Q40 zipper bags: red-line packaging for everyday work
The SMART Q40 range brings together resealable LDPE bags identified by the red line above the closure. This guide explains the construction, sizing and purchasing details for business users.
Read the guide →STRONG Q50 zipper bags: range features and selection
STRONG Q50 is Protectmedical’s resealable LDPE range without a red line. Its LDPE marking above the closure is a visible distinction from SMART.
Read the guide →Why is LDPE used for zipper bags? Properties and applications
LDPE — low-density polyethylene — is widely used in flexible packaging. Its flexibility, visibility and suitability for film and seal construction help explain its use in resealable zipper bags.
Read the guide →Zipper bags: sizes, uses and frequently asked questions
A resealable zipper bag combines flexible film with an integral press-to-close seal. Use this guide to compare sizes, understand common applications and prepare a clear purchasing specification.
Read the guide →LDPE 04 on packaging: material identification and sorting
LDPE 04 identifies low-density polyethylene. It helps describe the material used in packaging, but it is not a quality grade, food-contact approval or guarantee that a used item will be recycled.
Read the guide →How to size rubber bands: diameter, width, thickness and lay-flat length
A useful rubber-band specification separates internal diameter at rest, band width and thickness. Correct selection helps hold a bundle without unnecessary strain on the band or the contents.
Read the guide →Find your region or city.
Looking for packaging or disposable supplies for a local team? Choose a delivery destination and explore the products. Locations describe delivery coverage.