Silicone oil release film with sticky surface and production process of silicone oil release film
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A release film and silicone oil technology, which is applied to the surface coating liquid device, adhesive, film/sheet adhesive, etc., can solve the problem that the release film is not suitable for hot melt adhesive, and achieve easy separation , The effect of low release force
Inactive Publication Date: 2014-10-01
佛山凯仁精密材料有限公司
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[0005] The purpose of the present invention is to provide a silicone oil release film with a sticky surface and its production process, aiming to solve the technical problem that the traditional release film is not suitable for hot melt adhesives
Method used
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Embodiment 1
[0039] This embodiment discloses a silicone oil release film with a sticky surface, the components of the silicone oil surface are by weight, including:
[0040] 9240 parts of solvent;
[0041] Release agent 1000 parts;
[0042] 200 parts of cross-linking agent;
[0043] 13 parts of curing agent;
[0044] Release force regulator 300 parts;
[0045] Adhesive 3000 parts
[0046] In this embodiment, the solvent includes solvent TOL, solvent D-30, solvent MEK and solvent IPA, and the mixing ratio is 21:21:42:8.4.
[0047] In this embodiment, the adhesive is 7651 type adhesive, specifically, Dow Corning 7651 adhesive can be used. In practical application, too much adhesive will lead to excessive viscosity on the surface of the release film, which will easily affect the release effect of the release film; too little amount of adhesive will cause the surface viscosity of the release film at room temperature to be too low, and it will be difficult to bond with hot melt adhesive. ...
Embodiment 2
[0065] The scheme in this example is basically the same as in Example 1, except that in this example, solvent D-40 is used instead of solvent D-30, and 7652-type adhesive is used instead of 7651-type adhesive.
[0066] The silicone oil surface viscosity of the release film produced in this embodiment is greater than that in Example 1, and its release force is 300-500g / in, which is more suitable for products with smaller die-cut shapes of hot melt adhesive.
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Abstract
The invention discloses a silicone oil release film with a sticky surface and a production process of the silicone oil release film. The silicone oil release film comprises a substrate and a silicone oil face attached to the surface of the substrate, wherein the silicone oil face is prepared from the following components in parts by weight: 9240 parts of a solvent, 1000 parts of a releaser, 200 parts of a cross-linking agent, 13 parts of a curing agent, 300 parts of a releasing force adjustor and 3000 parts of an adhesive. The solvent comprises one or a mixture of more of a solvent TOL (Toluene), a solvent D-40, a solvent D-30, a solvent MEK (Methyl Ethyl Ketone) or a solvent IPA (Iso Propyle Alcohol). The releaser comprises a 7485 type releaser. The cross-linking agent comprises one or a mixture of more of a 297 type cross-linking agent, a 7672 type cross-linking agent or a 7028 type cross-linking agent. The adhesive is a 7652 type adhesive or a 7651 type adhesive. The release film disclosed by the invention has certain viscidity, can be stably attached to a hot melt adhesive without displacement, and is low in releasing force and convenient to be separated from the hot melt adhesive and free from residues on the surface of the hot melt adhesive separated.
Description
technical field [0001] The invention relates to a silicone oil release film and a production process thereof, in particular to a silicone oil release film with a sticky surface and a production process thereof. Background technique [0002] The release film refers to a film with a separable surface. The release film is not sticky or slightly sticky after being in contact with a specific material under limited conditions. For example, a layer of silicone oil can be coated on the substrate PET film to obtain a silicone oil-type PET release film. The function of the silicone oil is to reduce the surface adhesion of the PET film and achieve the effect of release. The release film is divided into light release film, medium release film and heavy release film according to its release force. [0003] Traditional hot melt adhesives are generally used with medium release film or heavy release film, but because hot melt adhesives have the characteristics of "low viscosity at room tem...
Claims
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