Method of forming latex-, PVC- and plasticizer-free foamed floor or wall coverings
AssigneeTarkett Pegulan AG
InventorsHorst Oppermann, Reinhold Blass, Joachim Duerkop, Klaus Schmidt-Ott
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Abstract
A process for manufacturing latex-, PVC- and plasticizer-free textile or plastic floor or wall coverings, which contain a foamed layer, in which a powder mixture containing: (1) 100 parts by weight of a thermoplastic polymer; (2) 0-100 parts by weight of fillers; (3) 0.5-7 parts by weight of blowing agents; and (4) 0-30 parts by weight of additives; is scattered onto a backing layer, melted at a temperature within the range of from about 70.degree. to about 110.degree. C. smoothed between smoothing rolls and foamed at a temperature within the range of from about 120.degree. to about 200.degree. C.
Claims3
A process for manufacturing a latex-, PVC- and plasticizer-free plastic floor or wall covering which contains a foamed layer, comprising:
- (a) scattering a powder mixture having
- (i) 100 parts by weight of a thermoplastic polymer;
- (ii) 0-100 parts by weight of inorganic filler;
- (iii) 0.5-7 parts by weight of blowing agent;
- and
- (iv) 0-30 parts by weight of organic additive onto a backing layer;
- (b) melting the mixture at a temperature within the range of from about 70.degree. to about 110.degree. C.;
- (c) smoothing said melted powder mixture between smoothing rolls to form a smoothed layer on the backing layer;
- (d) applying at least one cover layer on said smoothing layer before step (e);
- and
- (e) foaming the smoothed layer on said backing layer at a temperature within the range of from about 120.degree. to about 200.degree. C., wherein said backing layer and/or said cover layer of step (d) are manufactured by the steps of:
- (a') scattering a powder mixture comprising
- (i) 100 parts by weight of a thermoplastic polymer;
- (ii) 0-100 parts by weight of inorganic filler;
- and
- (iii) 0-30 parts by weight of organic additive;
- (b') melting the mixture at a temperature within the range of from about 70.degree. to about 110.degree. C.;
- and
- (c') smoothing said melted powder mixture between smoothing rolls.
A process for manufacturing a latex-, PVC- and plasticizer-free plastic floor or wall covering which contains a foamed layer, comprising:
- (a) scattering a powder mixture having
- (i) 100 parts by weight of a thermoplastic polymer;
- (ii) 0-100 parts by weight of inorganic filler;
- (iii) 0.5-7 parts by weight of blowing agent;
- and
- (iv) 0-30 parts by weight of organic additive onto a backing layer;
- (b) melting the mixture at a temperature within the range of from about 70.degree. to about 110.degree. C.;
- (c) smoothing said melted powder mixture between smoothing rolls to form a smoothed layer on the backing layer;
- (d) printing a multicolored design on said smoothed layer of step (c);
- (e) applying at least one cover layer on said printed smoothed layer of step (d);
- and
- (f) foaming the printed smoothed layer having the cover layer thereon at a temperature within the range of from about 120.degree. to about 200.degree. C.
Dependencies are inferred from the claim text.