Method for producing a plastic foil with a non-stick coating and a package

p0001The invention relates to a process for producing a plastic film with a nonstick coating, in particular silicone, and a method of manufacturing a wrapping packaging with embossed edge closure strip from a portion of the plastic film.

p0002There are such wrap packaging and the associated plastic known, but they all have the disadvantage that embossed closure strips can be very difficult and only with special methods, usually a complicated process needle manufactured.

p0003Thus, from <patcit id="pcit0001" dnum="US5333493A"><text>US 5,333,493</text></patcit> discloses a similar packaging film having a non-stick coating covering portions.

p0004From the <patcit id="pcit0002" dnum="US5033250A"><text>US-A-5,033,250</text></patcit> it is known for controlling a packaging machine with regard to expansion behavior of processing wrapper, to speed repetitive marks, etc. use.

p0005The invention has the object of proposing a process for producing a plastic film and a method for the production of wrap packaging of this plastic film, wherein said regions not covered by the release coating strips are accurately positioned, that an arrangement in each case on two opposite edges of a portion allows and wherein the resulting package can be created securely closed and also is durable.

p0006This object is achieved in that parts of the portions of the film, in which the embossing is provided, will be spared from the non-stick coating and said marks for controlling the coating are provided with non-stick agent to the foil in defined intervals, at least two non-stick coating-free portions of the portion of the film are connected to one another, wherein the recesses are arranged on the non-stick coating is substantially transverse to the transport direction of the not yet divided into sections foil and wherein the compound of part areas is carried out as so-called Verkrümperung, in which a plurality dot-shaped individual embossments are provided.

p0007This makes it possible, in that region, which has no anti-adhesive coating to apply an embossed closure strip, said continuous film sections can be produced for wrap packaging in a simple manner. In addition, it is possible to realize a very precise control of the anti-stick coated and uncoated areas of the film.

p0008An improved and secure closing of wrapping packaging is guaranteed.

p0009A secure holding together the interconnected subareas is also guaranteed.

p0010Beyond the invention may be embodied as an additional sealing the connection of the partial areas.

p0011In sealable films herewith a secure connection of the sections with each other is produced.

p0012In the drawing the invention is illustrated using an exemplary embodiment. They show:<dl id="dl0001"><dt>Fig.1</dt><dd>a sheet for producing a wrapping packaging and</dd><dt>Fig.2</dt><dd>a wrapping packaging made of a film section</dd></dl>

p0013With 1 in <figref idrefs="f0001">Fig.1</figref> a film web referred to, which has a non-stick coating of silicone in subregions second Other sections 3, which lie between the areas 2, are omitted from this siliconization. For applying the siliconization in the first part of areas 2 on the film web 1, to control positioning and scanning markers 4 are provided on the film web first

p0014To form a wrap package 10, the sheet 1 is cut along lines. 5 Any resulting portions 6 are then wrapped around a object to be packed 11 and verkrümpert the overlapping layers of 6 sections each other in the recesses. 3

p0015This Verkrümperung 12 consists of individual line-shaped embossing, which detect both layers and connect to each other.