Sound-absorbent foam moldings
    3.
    发明授权
    Sound-absorbent foam moldings 有权
    吸声泡沫塑料

    公开(公告)号:US6060529A

    公开(公告)日:2000-05-09

    申请号:US296329

    申请日:1999-04-22

    IPC分类号: G10K11/162 C08J9/18

    CPC分类号: G10K11/162

    摘要: The invention relates to sound-absorbent foam moldings which have a sound-absorption level according to DIN 52215 of from 30 to 95% in the frequency range from 0.5 to 4 kHz. The foam is an incompletely fused molded polyolefin or polystyrene foam with from 10 to 40% interstitial volume.

    摘要翻译: 吸音泡沫塑料本发明涉及吸音泡沫塑料成型体,其在0.5至4kHz的频率范围内具有根据DIN 52215的吸声水平为30至95%。 泡沫是不完全熔融的模制聚烯烃或聚苯乙烯泡沫,其间隙体积为10至40%。

    Expansion of shrunk foam particles of propylene polymers
    4.
    发明授权
    Expansion of shrunk foam particles of propylene polymers 失效
    膨胀丙烯聚合物的收缩泡沫颗粒

    公开(公告)号:US5045256A

    公开(公告)日:1991-09-03

    申请号:US549164

    申请日:1990-07-06

    IPC分类号: C08J9/22

    摘要: Foam particles of propylene polymers which have shrunk from 40 to 95% of their original volume and have a bulk density of from 10 to 30 g/1 can be expanded if they are treated with air or nitrogen under superatmospheric pressure, subsequently decompressed. If desired post-foamed by heating and, after aging, re-treated with air or nitrogen under superatmospheric pressure, subsequently decompressed and aged under atmospheric pressure until the pressure in the cells has dissipated.

    摘要翻译: 如果在超大气压下用空气或氮气处理,则其膨胀的丙烯聚合物的泡沫颗粒已经收缩了其原始体积的40至95%并且具有10至30g / l的堆积密度,随后减压。 如果需要通过加热发泡,并且在老化之后,在空气或氮气中在超大气压下再次处理,随后在大气压下减压和老化,直到电池中的压力消散。

    Shock-absorbing propylene polymer composite moldings
    9.
    发明授权
    Shock-absorbing propylene polymer composite moldings 失效
    阻聚丙烯聚合物复合材料

    公开(公告)号:US5180628A

    公开(公告)日:1993-01-19

    申请号:US822263

    申请日:1992-01-17

    摘要: A shock-absorbing propylene polymer composite molding containsa. a layer with a thickness of from 0.5 to 10 mm which contains a propylene polymer having a melting point of from 130.degree. to 165.degree. C.,b. an intermediate layer with a thickness of from 0.05 to 0.5 mm comprising a hot-melt adhesive based on an olefin copolymer having a melting point of from 90.degree. to 140.degree. C.,c. a foam layer with a thickness of from 3 to 200 mm and a density of from 0.015 to 0.1 g/cm.sup.3 based on a propylene copolymer having a melting point of from 125.degree. to 155.degree. C.,d. an intermediate layer with a thickness of from 0.05 to 0.5 mm comprising a hot-melt adhesive based on an olefin copolymer having a melting point of from 90.degree. to 140.degree. C.,e. a layer with a thickness of from 0.5 to 10 mm which contains a propylene polymer having a melting point of from 130.degree. to 165.degree. C.

    摘要翻译: 减震丙烯聚合物复合成型体包含a。 b。厚度为0.5至10毫米的层,其含有熔点为130至165℃的丙烯聚合物,b。 c)厚度为0.05至0.5mm的中间层,包括基于熔点为90-140℃的烯烃共聚物的热熔粘合剂,c。 d。基于熔点为125-155℃的丙烯共聚物,厚度为3至200mm,密度为0.015至0.1g / cm 3的泡沫层。 厚度为0.05至0.5mm的中间层,包括基于熔点为90°至140℃的烯烃共聚物的热熔粘合剂, 厚度为0.5〜10mm的层,其含有熔点为130〜165℃的丙烯聚合物。