Assembly with temporary protective film

Patent metadata

Field	Value
Publication number	US-10259201-B2
Application number	US-201314396850-A
Country	US
Kind code	B2
Filing date	Apr 26, 2013
Priority date	Apr 27, 2012
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

Abstract

The invention relates to a composite comprising (i) a plastics component or (ii) a semifinished plastics product with a protective layer system, where the protective layer system comprises a plastics film and an organosilicon plasma polymer layer, the organosilicon plasma polymer layer is arranged between the (i) plastics component or the (ii) semifinished plastics product and the plastics film and, after the hardening of the (i) plastics component or of the (ii) semifinished plastics product, the organosilicon plasma polymer layer adheres more securely to the plastics film than to the (i) plastics component or the (ii) semifinished plastics product.

First claim

What is claimed is:

1. An assembly comprising:
a mold; and
(i) a plastic component or (ii) a semi-finished plastic product, each of (i) the plastic component or (ii) the semi-finished plastic product having a protective layer system disposed between the mold and (i) the plastic component or (ii) the semi-finished plastic product;
wherein the protective layer system comprises a plastic film and an organosilicon plasma polymer layer, the plastic film being arranged between the mold and the organosilicon plasma polymer layer and the organosilicon plasma polymer layer being arranged between the plastic film and (i) the plastic component or (ii) the semi-finished plastic product and the plastic film;
wherein after hardening of (i) the plastic component or of (ii) the semi-finished plastic product, the organosilicon plasma polymer layer adheres more securely to the plastic film than to (i) the plastic component or (ii) the semi-finished plastic product;
wherein the plastic film comprises a material selected from the group consisting of a thermoplastic elastomer and a thermoplastic polymer;
wherein the atomic ratios in the organosilicon plasma polymer layer as measured by means of XPS are:

1.00
≤n(O + N):n(Si)
≤ 2.20,

1.20
≤n(C):n(Si)
≤ 2.00,

0.70
≤n(C):n(O + N)
≤ 2.00;

and
wherein the plastic film of the protective layer system is adapted for exerting a release effect in relation to the mold such that (i) the plastic component or (ii) the semi-finished plastic product having the protective layer system can be removed from the mold and subsequently the protective layer system can be peeled from (i) the plastic component or (ii) the semi-finished plastic product after the hardening of (i) the plastic component or (ii) the semi-finished plastic product.

2. The assembly according to claim 1 , wherein based on the entirety of the elements silicon, oxygen, nitrogen, and carbon as 100 atom %, the following applies to values measured by means of XPS on the organosilicon plasma polymer layer:

silicon
from 17 to 27 atom %,

(oxygen + nitrogen)
from 26 to 50 atom %,

carbon
from 25 to 50 atom %.

3. The assembly according to claim 1 , wherein a thickness of the organosilicon plasma polymer layer is 2 μm or less.

4. The assembly according to claim 1 , wherein a portion of (i) the plastic component or (ii) the semi-finished plastic product disposed on a side directed toward the organosilicon plasma polymer layer is entirely composed of a material selected from the group consisting of a thermoset, a thermoplastic, a matrix resin for a fiber-composite plastic, a plastic foam, and a lacquer.

5. The assembly according to claim 4 , wherein the matrix resin for the fiber-composite plastic is a matrix resin selected from the group consisting of an epoxy resin, an polyurethane resin, a polyester resin, a vinyl ester resin, and a phenolic resin.

6. The assembly according to claim 4 , wherein the lacquer is applied in an application selected from the group consisting of a gel coat and an adhesive.

7. The assembly according to claim 1 , comprising:
the plastic component;
wherein the plastic component has been produced by a process selected from the group consisting of an injection molding, a reaction injection molding process, a foaming process, a fiber-composite material production process, an infusion process, a vacuum infusion process, a lamination process, a manual lamination process, an injection process, a resin transfer molding process, a liquid resin press molding process, a pray layup process, a prepreg process, and an in-mold-coating process.

8. The assembly according to claim 7 , wherein the fiber-composite material production process is based on fibers selected from the group consisting of carbon fibers, glass fibers, and polymer fibers.

9. The assembly according to claim 1 , wherein the softening point of the plastic film is 100° C. or greater.

10. The assembly according to claim 1 , comprising the semi-finished plastic product being in a state which is not yet entirely hardened.

11. The assembly according to claim 10 , wherein (i) the plastic component or (ii) the semi-finished plastic product is a web product.

12. The assembly according to claim 11 , wherein the web product is a windable web product.

13. The assembly according to claim 1 , wherein a material of (i) the plastic component or (ii) the semi-finished plastic product comprises a fiber-composite material.

14. The assembly according to claim 1 further comprising a layer of a coating material adjacent to the organosilicon plasma polymer layer and directed toward (i) the plastic component or (ii) the semi-finished plastic product.

15. The assembly according to claim 1 , wherein based on the entirety of the elements silicon, oxygen, nitrogen, and carbon as 100 atom %, the following applies to values measured by means of XPS on the organosilicon plasma polymer layer:

silicon
from 17 to 27 atom %,

(oxygen + nitrogen)
from 26 to 50 atom %,

carbon
from 25 to 50 atom %;

and
and wherein:
the thickness of the organosilicon plasma polymer layer is 2 μm or less;
the plastic film is composed of:
a thermoplastic elastomer selected from the group consisting of a thermoplastic polyester elastomer (TPE-E), a thermoplastic copolyester (TPC), a polyetherester, a crosslinked thermoplastic elastomer based on olefins (TPE-V/TPV), a mixture of polypropylene and ethylene-propylene-diene rubber (EPDM/PP), a thermoplastic elastomer based on urethanes (TPE-U/TPU), a mixture of natural rubber and polypropylene (NR/PP), a mixture of nitrile rubber and polypropylene (NBR/PP), and a mixture of ethylene-vinyl acetate and polyvinylidene chloride (EVA/PVDC), or
a thermoplastic polymer selected from the group consisting of

Assignees

• Fraunhofer Ges Forschung

Inventors

• Vissing Klaus-Dieter
• Ott Matthias
• Grassl Gregor

Classifications

• B32B27/36

  comprising polyesters · CPC title

• B32B27/306

  comprising vinyl acetate or vinyl alcohol (co)polymers · CPC title

• Y10T428/269

  including synthetic resin or polymer layer or component · CPC title

• Y10T428/31598

  Next to silicon-containing [silicone, cement, etc.] layer · CPC title

• Y10T428/249991

  Synthetic resin or natural rubbers · CPC title