Wet Wipe Sachet Materials: Paper, Kraft and Triplex Laminates

What is a wet wipe sachet made of?

A wet wipe sachet is a flexible laminate: an outer printable layer, optionally a barrier layer, and an inner heat-seal layer that fuses when the pack is closed. The three common builds are white paper, kraft paper and a triplex laminate with aluminium foil.

The inner layer is the part the lotion touches. It is almost always a thermoplastic sealant such as polyethylene, either extrusion-coated or laminated on, because it forms the seal and keeps the liquid inside. Paper on its own cannot hold a lotion-soaked wipe. The outer layer carries the print and sets the look. Anything between them is there for barrier.

"Triplex" is trade shorthand for a three-layer structure. In wet wipe supply it usually means a printable outer layer (paper or film), a thin aluminium foil, and a sealant layer. "Duplex" is the two-layer version without foil. Names vary between suppliers, so a quotation should always list the layers rather than rely on the word.

How do paper, kraft and triplex sachets compare?

White paper and kraft sachets are the economical, good-looking choices for wipes that are used within a few months. Triplex gives the strongest barrier and suits long storage, warm climates and sea freight, at higher material cost and a more limited end-of-life story.

"Moderate" and "highest" are relative. Exact barrier values depend on layer thickness and structure and are specified at quotation. For what water vapour transmission means and how layers are rated, see Pouch Laminate Structures and Barrier Properties; the physics is identical for a sachet.

Why does barrier matter more for wet wipes than for most packaging?

The wipe is soaked in a water-based lotion, so any water vapour that escapes through the sachet wall is lotion lost from the wipe. Over time the wipe dries and loses fragrance, and the user notices a dry, scentless towel.

Two mechanisms matter in practice:

• Vapour loss through the wall. Polyethylene slows water vapour but does not stop it. A foil layer, intact, effectively stops it. Thin foils can have pinholes, which is why foil gauge is part of the specification.
• Scent loss and absorption. Citrus fragrances contain terpenes such as limonene, which polyethylene can absorb and pass through. The fragrance weakens, and absorbed oils can soften the sealant and affect seal strength.

Lotion with alcohol raises both effects, because ethanol is a more aggressive solvent for polymer layers and adhesives than water. If your lotion contains alcohol or a strong fragrance load, tell the sachet supplier at the start: the laminate and its adhesive system may need testing against the real lotion.

There is a regulatory angle too. When the filled product is a cosmetic, the safety report under Regulation (EC) No 1223/2009 must cover the relevant characteristics of the packaging material, in particular purity and stability (Annex I, Part A, point 4). Packaging data is part of the dossier, not an afterthought; see Are Wet Wipes Cosmetics?.

How does the sachet seal, and what can go wrong?

The sachet is formed around the folded wipe and sealed with heat and pressure on three or four sides, depending on the format. The sealant layers fuse into one weld.

Three failure modes are worth specifying against:

• Lotion in the seal. The wipe is saturated when the sachet is sealed, and lotion trapped in the seal area weakens the weld and causes slow leaks. Filling and sealing settings and seal-area design reduce this; a seal strength and leak test confirms it.
• Edge wicking. In a paper-based sachet the cut paper edge at the seal can absorb lotion and show a stain along the edge. A fully covered paper edge, a wider seal or a foil layer reduces it.
• Ink in the seal. Heavy ink coverage across the seal area can interfere with the weld. Layouts normally keep seal zones free of heavy ink, or the ink and lacquer are chosen for seal compatibility.

Final seal parameters and test methods are set with the party who fills the sachets. If that is not the sachet manufacturer, share the laminate data sheet with them before the first run.

How does each material print?

White paper prints brightest, kraft prints warmer and darker, and triplex gives a metallic or glossy face. All three can be printed in spot colours, and the colour count and method are confirmed at technical review.

• White paper: closest to the colours on screen. Fine type and small logos reproduce well. A varnish over the print protects it from lotion on a guest's fingers.
• Kraft: the brown base darkens every colour. Light brand colours often need a white ink underlay; dark, saturated spot colours and black reproduce best. Fine type is more forgiving when set in a bold weight.
• Triplex: when the printed layer is a film printed on its reverse side before lamination, the ink sits inside the laminate and cannot rub off. A paper-faced triplex is surface printed and varnished like a paper sachet. Metallic silver can appear through uncovered areas, which can be used as a design element.

Practical rules for any of the three: keep small type clear of the seal edges, keep the regulatory panel on a plain background for legibility, and leave room for a tear notch. Print method and spot colour basics are in Packaging Printing Methods and Pantone vs CMYK.

Is a wet wipe sachet recyclable?

Paper sachets with a polymer layer and foil laminates are generally not designed for recycling in standard paper or plastic streams, and a foil laminate is the hardest case. Treat any recyclability claim as something to be verified against the national collection system and the packaging rules, not assumed from the word "paper".

Under the EU Packaging and Packaging Waste Regulation (EU) 2025/40, which applies in general from 12 August 2026, packaging is graded for recyclability and conditions apply to its placing on the market; how this plays out for small laminated sachets is still being clarified, so confirm with your compliance contact. The grading logic is explained in PPWR Recyclability Grades Explained, and the meaning of "recyclable", "compostable" and "biodegradable" claims in Recyclable, Compostable and Biodegradable Packaging.

Because the EU rules on generic environmental claims (Directive (EU) 2024/825, applying from 27 September 2026) restrict unsupported terms such as "eco-friendly", an honest description of the sachet is safer than a green label. A kraft look is a design choice; it is not a sustainability claim.

Which sachet material should I choose?

Choose by storage time and distribution first, and by look second. If the wipes will be used within a few months and stored indoors, a white paper or kraft sachet is normally adequate. If they will sit in warm stores, travel by sea in summer or be stocked for a year or more, a triplex is the safer specification.

• Table service, high turnover, controlled stock: white paper or kraft.
• Delivery bag insert, moderate turnover: white paper, kraft or small-format triplex.
• Warm-climate sites, long distribution chains, export by sea: triplex.
• Alcohol-containing lotion or strong citrus load: triplex, or a tested paper build.
• Natural or craft brand image: kraft, with the colour limits above.
• Metallic, premium finish: triplex.

Sample runs and pre-production approval are the cheapest way to settle a borderline case. A shelf-life test of the real wipe in the real sachet, for the real storage time, replaces any rule of thumb. Packaging Sampling, Pre-Production Approval and Quality Control covers how to organise it.

What to send when you request wet wipe sachets

• Target sachet size, and the folded wipe dimensions if you already have a wipe.
• Preferred material (white paper, kraft, triplex) or the storage time and climate to be covered.
• Lotion type: alcohol-free or not, fragrance family, and who fills the sachets.
• Artwork status and number of colours or designs.
• Markets of sale, since the marking and label content depend on them.

Send these through the contact page and see the packaging RFQ guide for the general fields. The full product overview is on the Custom Printed Wet Wipes hub; sizes and lotions follow in Wet Wipe Sizes, Lotions and Fragrances for Restaurants.