阅读说明：本技术 通过有针对性地施加增粘剂制造复合元件的方法 (Method for producing a composite element by targeted application of a tackifier ) 是由 K.弗兰肯 于 2018-07-02 设计创作，主要内容包括：用于制造复合元件的方法,包括以下步骤：1)提供第一覆盖层；2)将反应生成增粘剂的第一反应混合物施加在覆盖层上；和3)将反应生成聚氨酯-/聚异氰脲酸酯泡沫的第二反应混合物施加在第一覆盖层上,使得施加在第一覆盖层上的第一反应混合物至少部分地与第二反应混合物接触。增粘剂优选是2K-增粘剂,其组分单独地且根据预定图案来打印并在基材上反应生成增粘剂。(Method for manufacturing a composite element, comprising the steps of: 1) providing a first cover layer; 2) applying a first reaction mixture that reacts to form an adhesion promoter to the cover; and 3) applying a second reaction mixture which reacts to form a polyurethane/polyisocyanurate foam to the first cover layer, such that the first reaction mixture applied to the first cover layer is at least partially in contact with the second reaction mixture. The adhesion promoter is preferably a 2K-adhesion promoter, the components of which are printed separately and according to a predetermined pattern and reacted on the substrate to produce the adhesion promoter.)

1. Method for manufacturing a composite element, comprising the steps of:

1) providing a first cover layer;

2) applying an adhesion promoter component to the first cover layer, wherein the adhesion promoter component comprises a one-component adhesion promoter and/or a first reaction mixture which reacts to form the adhesion promoter

And wherein the first reaction mixture is obtained from a plurality of components, wherein at least one isocyanate component and at least one isocyanate-reactive component are used for this purpose;

3) applying a second reaction mixture, which reacts to form a polyurethane/polyisocyanurate foam, to the first cover layer, such that the tackifier component applied to the first cover layer is at least partially in contact with the second reaction mixture;

it is characterized in that the preparation method is characterized in that,

the tackifier component is applied to the first cover layer in a predetermined pattern,

for the case of applying the one-component tackifier in step 2):

ejecting the single component tackifier as individual droplets from the nozzle as instructed by the control unit until a predetermined pattern is applied;

for the case of applying the first reaction mixture in step 2), applying the first reaction mixture on the first cover layer in step 2) comprises the following steps:

2a) applying droplets of a first component selected from those components for the first reaction mixture onto the first cover layer corresponding to the predetermined pattern;

2b) applying droplets of one other component selected from those components for the first reaction mixture onto previously applied droplets of the other component of the first reaction mixture, corresponding to the predetermined pattern, so as to at least partially contact the previously applied droplets of the other component;

2c) repeating steps 2a) and 2b) until a predetermined pattern is applied using all components of the first reaction mixture;

wherein the application of droplets in step 2a) and/or step 2b) is performed such that a single droplet is ejected by the nozzle as instructed by the control unit.

2. The process according to claim 1, wherein the first reaction mixture is obtained from an isocyanate component and an isocyanate-reactive component, and

applying the first reaction mixture on the first cover layer in step 2) comprises the following steps:

2a) applying droplets of a first component selected from the group consisting of an isocyanate component and an isocyanate-reactive component onto a first cover layer corresponding to a predetermined pattern;

2b) applying droplets of a second component, which is another component selected from the group consisting of an isocyanate component and an isocyanate-reactive component, onto the previously applied droplets of the first component corresponding to the predetermined pattern such that the previously applied droplets of the first component are at least partially in contact with the droplets of the second component;

2c) repeating steps 2a) and 2b) until a predetermined pattern of droplets is applied;

wherein the application of droplets in step 2a) and/or step 2b) is performed such that a single droplet is ejected by the nozzle as instructed by the control unit.

3. The method of claim 1 or 2, wherein the tackifier component is present at ≥ 10g/m²To 200g/m²Is applied to the first cover layer.

4. The method according to any one of the preceding claims, wherein the tackifier component is applied to the first cover layer with a coverage of ≥ 10% to ≤ 90%.

5. The method according to any of the preceding claims, wherein the volume ratio and/or the frequency of the droplets applied in steps 2a) and 2b) is varied over time.

6. The method of any preceding claim, wherein the first reaction mixture has an isocyanate component, a first isocyanate-reactive component, and a second isocyanate-reactive component, and wherein the first isocyanate-reactive component and the second isocyanate-reactive component each, by themselves, have a different reaction rate with the isocyanate component.

7. The method of any one of the preceding claims, wherein the predetermined pattern of applying the first reaction mixture on the first cover layer is selected from the group consisting of straight lines, wavy lines, dots, or a combination thereof.

8. The method according to any of the preceding claims, wherein in step 2a) and/or 2b) a plurality of nozzles are arranged in one print head.

9. The method according to any of the preceding claims, wherein in step 2a) and/or 2b) the nozzles ejecting the liquid droplets are arranged as needle valves controllable by the control unit.

10. The method according to any of the preceding claims, wherein the first cover layer is moved at least during step 2).

11. The method of any preceding claim, wherein the first component has a higher viscosity than the second component in the first reaction mixture.

12. The process according to any one of the preceding claims, wherein in the first reaction mixture the isocyanate component comprises monomeric and/or polymeric 4,4' -MDI and the isocyanate-reactive component comprises a propylene glycol-propylene oxide-polyether polyol and/or a toluene diamine-initiated ethylene oxide-propylene oxide-polyether polyol.

13. The method according to any one of the preceding claims, wherein step 4) is performed after step 3):

4) the second reaction mixture, which reacts to form the polyurethane/polyisocyanurate foam, is brought into contact with the second cover layer.

14. A method according to claim 13, wherein in step 4) the second cover layer is contacted on the side facing the second reaction mixture with an adhesion promoter as described in claims 1 to 13 and/or with a reaction mixture which reacts to form an adhesion promoter.

15. A system for producing a composite element, comprising a transport device for a first cover layer, a first application device for applying a first reaction mixture of a tackifier and/or a tackifier-forming reaction to the cover layer, and a second application device for applying a second reaction mixture of a polyurethane/polyisocyanurate foam to the cover layer,

it is characterized in that the preparation method is characterized in that,

the system further comprises a control unit arranged to be able to run the method according to any of claims 1-14.