CN101522309A - 生产木材复合材料的方法和设备 - Google Patents
生产木材复合材料的方法和设备 Download PDFInfo
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Abstract
本发明涉及生产碎料的方法和设备,所述碎料用于木材复合材料的生产。根据本发明,在多个步骤将包括粘合材料、胶和剥离材料的胶粘层压品废料处理成碎料,并且胶的粘合性质丧失。
Description
发明领域
【0001】本发明涉及权利要求1的前序定义的方法和在权利要求10的前序定义的设备,其用于生产在木材复合材料生产中使用的碎料(chaff),以及权利要求16的前序定义的用于生产木材复合材料的方法。
发明背景
【0002】各种挤压方法是现有技术已知的,其中,塑性原料被熔化、与任选的添加剂和着色剂混合并且通过某种轮廓的模具挤压以形成产品。当从模具中出来时,产品即成为或接近它的最终形状。从模具出来,产品可被导入校准装置,在其中产品被提供为准确和最终尺寸,并进一步导入作为冷却器发挥功能的储水器。产品在生产流水线上被锯成所希望的尺寸。最经常以颗粒或粉末形式将原料投料至挤压机。
【0003】不同种类的木塑复合材料(wood-plastic compositematerials)及其生产方法也是现有技术已知的。由挤压方法生产的木塑复合材料是通过将木基成分(基于木材的成分,wood-based constituents)和不同种类的加工助剂作为填料添加到基体塑料中来进行制造。所使用的木基成分通常是木屑,但也可以是木片或化学纸浆纤维。原料通常以颗粒状投料至挤压。因此,首先必须把木基原料以及塑料以各自的方法挤压成颗粒。附加处理会增加生产成本。然而,有可能的是将原料组分本身进料入挤压机并将其制成产品。这要求使用不同种类的强制进料设备,以便即使原料不均匀以及比重低,也可确保稳定的进料。该方法被称为直接进料。
【0004】当期望添加到基体的木基成分可加固外形时,必须考虑所添加成分的纤维长度和形状。用于木塑复合材料的木屑被如此制成大小和形状以使其实际上不是加固产品,而是相反地,仅在塑料基体中起填料的功能。
【0005】在实际处理前,通常需要干燥木屑或木片,因为填料中的高含湿量会降低所制造产品的质量。在此处理过程中,被气化的水蒸汽产生气泡至外形,其影响产品的外观及机械性能。作为附加处理所进行的干燥是不必要的步骤,原因在于附加成本及爆炸风险。
【0006】用被处理成颗粒形式的木材废料和再生塑料制造木材复合材料也是现有技术已知的。用纸和热塑性材料制造木材复合材料也可从出版物US 4874095得知,并且用基于木材和基于塑料的材料制造木材复合材料还可从出版物US 20020034629和US 3718536中得知。
发明目的
【0007】本发明目的是消除上述提到的不足。本发明的一个具体目的是公开用于生产废料碎料的新型方法及设备——所述废料碎料是生产木材复合材料中需要的,以及进一步用于生产木材复合材料的新型方法及设备。本发明的另一个目的是公开用于处理胶粘层压品废料的新方法和装置。
发明概述
【0008】根据本发明的方法和设备以权利要求所述为特征。
【0009】本发明基于生产在木材复合材料生产中使用的碎料的方法。根据本发明,在多个步骤中将包含粘合材料、胶和剥离材料的胶粘层压品废料处理成碎料,并且在该方法中胶的粘合性质丧失。
【0010】本发明还基于生产碎料的设备。根据本发明,该设备包括至少两个压碎机,用于粉碎含有粘合材料、胶和剥离材料的胶粘层压品废料,并且该装置包括用于调节压碎机温度的热调节器。
【0011】另外,本发明基于从上述碎料生产木材复合材料的方法。在该方法中,将预先确定的添加剂与碎料混合,并且将碎料处理成木材复合产品。在该方法中,优选地,生产木材复合材料而不将原料预先粒化成颗粒。在一个实施方式中,从碎料挤压出木材复合材料产品。可选地,可例如通过模铸、板压或以类似的方式形成该木材复合材料产品。在一个实施方式中,预制产品被冷却。
【0012】在本发明的一个实施方式中,胶粘层压品废料由这样的粘合材料形成,在其上已设置了胶层,并且贴合在该胶层上、用作胶层的保护层的是在应用部位可以容易地剥离的剥离材料。在一个优选的实施方式中,粘合材料和/或剥离材料包括基于木材纤维的成分和/或基于塑料或聚合物的成分或其它有机成分。在一个实施方式中,粘合材料和/或剥离材料是基于木材纤维的纸、纸板或类似物。在一个实施方式中,基于木材纤维的纸、纸板或类似物包括基于塑料或聚合物的材料或用基于塑料或聚合物的材料处理。在一个实施方式中,粘合材料和/或剥离材料可由基于基本上塑料或聚合物的材料形成。在一个实施方式中,剥离材料包括基于硅氧烷的成分。剥离材料优选被硅氧烷化。
【0013】在一个实施方式中,胶选自分散胶、热熔胶或其混合物。
【0014】在本发明的一个实施方式中,胶粘层压品废料以两个步骤在两个压碎机中被粉碎成所期望的碎料大小。在一个实施方式中,首先在预碎机然后在细碎机中将胶粘层压品废料粉碎。在一个优选的实施方式中,预碎步骤后,碎料大小为30至100mm。在一个优选的实施方式中,细碎步骤后,碎料大小为1至10mm。
【0015】在本发明的一个实施方式中,通过在一个以上的步骤中逐渐将废料粉碎为碎料并在粉碎的过程中保持温度足够低,经多个步骤的粉碎,胶粘层压品废料中含有的胶的粘合性质被抑制。
在本发明的一个实施方式中,在每个压碎步骤的出口,所形成碎料的温度低于60℃,优选地低于50℃。
【0016】在本发明的一个实施方式中,基本上与破碎步骤结合,优选地与细碎步骤结合,胶粘层压品废料碎料被过筛为所期望的碎料尺寸等级。优选地,细碎设备包括期望尺寸等级的筛子。
【0017】在本发明的一个实施方式中,附加塑料,其可以是未用过的或回收的塑料,被添加至胶粘层压品废料碎料。在一个实施方式中,在生产木材复合材料之前,例如在挤压之前,例如与混合和混合设备结合,添加附加塑料。在一个实施方式中,添加附加塑料基本上与生产结合,例如与挤压结合,与废料在一个流动中或在分开的流动中。
【0018】在一个实施方式中,在木材复合材料生产之前或与木材复合材料生产结合,例如在挤压之前和/或与挤压结合,将添加剂添加至碎料。在一个实施方式中,胶粘层压品废料和添加剂,以及在一个实施方式中,还有附加塑料,可以在生产木材复合材料之前,在混合设备中混合成优选地均匀的混合物。
【0019】在一个实施方式中,所使用的添加剂可以是偶联剂,例如MAPP(马来酐衍生物)——以提高胶粘层压品碎料和聚合物/塑料之间的粘合,滑石——用于润滑表面和产生硬度,着色剂,增滑剂,防霉剂,防火剂和/或紫外稳定剂。
【0020】优选地,添加剂和/或附加塑料以相对于胶粘层压品废料或其中含有的塑料的量的预先确定数量添加,并且所进料的添加剂和/或附加塑料的量由给料设备调节。
【0021】在本发明的一个实施方式中,在添加添加剂之前,碎料被均匀化。
【0022】在一个实施方式中,挤压机的起始温度被调节至180℃以上,在一个实施方式中,为200℃以上,在一个优选的实施方式中,为200至240℃。优选地,挤压机的温度分布被调节为急剧降低。
【0023】已知的任何挤压机设备本身,例如双螺杆挤压机,可与本发明结合使用。优选地,产品与挤压相结合成形。
【0024】在一个实施方式中,装置包括至少一种传送机,例如带式传送机,用于将原料和/或碎料传送至不同设备或在不同设备之间传送,或用于将产品传送出装置。
【0025】优选地,经由在多个步骤中的预处理,通过在一个以上的步骤/压碎机中——优选地,在预碎机和细碎机中——逐渐将废料破碎为碎料,并在破碎的过程中保持温度足够低——优选地低于60℃,更优选地低于50℃;包含在胶粘层压品废料中的胶的粘合性质被抑制,即丧失。在预处理中,胶的粘合性质丧失,但在挤压过程中释放的胶颗粒被用作增滑剂。通常已知的是,为了获得经济的生产率,必须将增滑剂作为助剂添加至传统木塑复合材料中,其增加生产成本。当胶粘层压品废料用作原料时,单独的增滑剂是不必要的。胶粘层压品材料包括不同种类的分散胶和热熔胶以及硅氧烷,其在再加工中熔化时发挥它们作为增滑剂的功能。
【0026】根据本发明的方法和设备适用于处理不同种类的胶粘层压品废料材料,用于生产碎料和制造木材复合材料。
【0027】根据本发明的方法和装置使含有复合胶的胶粘层压品废料的处理与可用产物的生产同时发生。
【0028】根据本发明的方法和装置非常简单,其降低投资和加工成本。
【0029】根据本发明的碎料和木材复合材料的生产是对环境非常友好的方法,并促进可持续发展原则。本发明提供这样的产品,其自身是再生材料且可被作为再生材料使用,还符合更加严格的环境规定。发明详述
【0030】在以下部分中,将借助详细的示例性实施方式对本发明进行描述,参考所附流程图1,其显示根据本发明的一个设备,其与用于生产木材复合材料的装置结合。
【0031】图1显示从胶粘层压品废料生产木材复合庭院用板(patioboard)的装置。
【0032】根据本发明的设备包括进料设备,这里为带式传送机9,用于将胶粘层压品废料传送至预碎机1。在预碎机1中,胶粘层压品废料被粉碎至碎料大小范围为30至100mm。当从预碎机中出来时,碎料的出口温度为约40至60℃。设备进一步包括至少一个细碎机2,通过传送机,碎料从预碎机1进料到细碎机2。在细碎机中,碎料被粉碎至更小的碎料大小,其范围为2至8mm。与细碎机2结合设置的是限定颗粒大小至期望水平但限定至大小小于8mm的筛子。可以有几个相邻排列的细碎机。细碎机的刀片间隙调节至0.15至0.25mm。当从细碎机中出来时,如果不特定限制,碎料的出口温度可上升至80℃。可用水或空气冷却细碎机。优选地,在细碎机之后碎料的温度被限制在低于50℃的温度。
【0033】筛孔的大小和类型的选择基于要生产的碎料和木材复合材料。试验已显示,孔直径与深度之间的比值优选地为1:1,并且孔表面积与筛上除孔之外的表面积之间的比值——优选地为45%至60%——对于不受干扰的执行过筛是十分重要的。
【0034】优选地,在碎料生产中调节压碎机、它们的效率比值(efficiency ratio)和碎料尺寸。如果预碎机的筛孔过大,那么相对于细碎机,预碎机运行不充分。相应地,如果预碎机的筛孔过小,预碎机运行过度。压碎机可用它们自身生产的废料、用清洁的木材和/或滑石粉来清洁。
【0035】根据图1的装置包括分选机8,用于收集所希望的或对于具体应用而言具体颗粒大小的碎料。
【0036】装置还包括均质化罐3,用于使碎料均质化。在混合设备4中,将所期望的和预先确定的添加剂和附加塑料与碎料混合,均质化的碎料已由传送机从均质化罐3中进料至混合设备4。
【0037】图1的装置包括双螺杆挤压机设备5,碎料混合物从混合设备4进入其中。成形装置6和用于冷却已成形产品的冷却7被安排与挤压机5结合。在这种装置中,通过水来实现冷却。在挤压机的第一端起始温度被调节成200至240℃。这允许使用相对硬的附加塑料。挤压机的温度分布被调节为剧变的;起始处为高温,在挤压机模具处就尽可能地低。成形产品的出口温度取决于产率和冷却水的温度。优选地,挤压机的出口温度被调节至尽可能地低,以便木材复合产品能以尽可能最硬的状态从装置中出现。在冷却储器的末端,产品的温度应被处理为低,以便产品不会由于在冷却过程中的后收缩而变形。
【0038】根据图1的装置使得胶粘层压品废料的处理以100至2000kg/h的速度进行,优选地为500至1500kg/h。
【0039】通过在多个步骤中逐渐粉碎废料并在粉碎过程中限制温度,胶粘层压品废料中胶的粘合性质可丧失。这保证了成功生产木材复合材料,并且,可在处理过程中容易地而无破坏地提供所期望的产品。
【0040】总之,试验已显示,使用根据本发明的方法和装置,容易从胶粘层压品废料材料提供碎料,并且因此,容易从碎料提供木材复合产品。
【0041】根据本发明的方法和设备适用于生产碎料的不同实施方式,所述碎料用于从胶粘层压品废料生产不同种类的木材复合材料。
【0042】本发明的实施方式不限于如上引用的例子;相反,在所附权利要求的范围内,许多变化都是可能的。
Claims (20)
1.生产碎料的方法,其特征在于在多个步骤将包括粘合材料、胶和剥离材料的胶粘层压品废料处理成碎料,并且在所述方法中,所述胶的粘合性质丧失。
2.根据权利要求1所述的方法,其特征在于所述胶粘层压品废料在预碎步骤被粉碎至期望的碎料大小。
3.根据权利要求1或2所述的方法,其特征在于在所述预碎步骤后,所述碎料大小为30至100mm。
4.根据权利要求1至3的任何一项所述的方法,其特征在于所述胶粘层压品废料在细碎步骤被粉碎至期望的碎料大小。
5.根据权利要求1或4所述的方法,其特征在于在所述细碎步骤后,所述碎料大小为1至10mm。
6.根据权利要求1至5的任何一项所述的方法,其特征在于通过将所述废料粉碎为碎料并在粉碎过程中保持温度足够低,经多个步骤的粉碎,所述胶粘层压品废料中含有的胶的粘合性质被抑制。
7.根据权利要求1至6的任何一项所述的方法,其特征在于在每一步骤的出口,所形成的碎料的温度低于60℃。
8.根据权利要求1至7的任何一项所述的方法,其特征在于在每一步骤的出口,所形成的碎料的温度低于50℃。
9.根据权利要求1至8的任何一项所述的方法,其特征在于与粉碎结合,所述胶粘层压品废料被过筛为期望的碎料大小等级。
10.生产碎料的设备,其特征在于所述装置包括至少两个压碎机(1,2),其用于粉碎含有粘合材料、胶和剥离材料的胶粘层压品废料(9),以及用于调节所述压碎机温度的热调节器。
11.根据权利要求10所述的设备,其特征在于它包括预碎机(1),用于将所述废料(9)粉碎至期望碎料大小。
12.根据权利要求10或11所述的设备,其特征在于它包括细碎机(2),用于将所述废料粉碎至期望碎料大小。
13.根据权利要求10至12的任何一项所述的设备,其特征在于它包括与压碎机(1,2)结合的将所述碎料过筛为期望的碎料大小等级的筛子。
14.根据权利要求10至13的任何一项所述的设备,其特征在于它与这样的装置结合,该装置包括用于将预先确定的添加剂与所述碎料混合的混合设备(4)、用于形成所述碎料的木材复合材料的挤压机(5)和用于冷却预制产品的冷却设备(7)。
15.根据权利要求14所述的设备,其特征在于所述装置包括进料设备,用于附加塑料的进料。
16.生产木材复合材料的方法,其特征在于胶粘层压品废料根据权利要求1至9的任一项被处理成碎料;预先确定的添加剂与所述碎料混合,以及所述碎料被处理成所述木材复合材料产品。
17.根据权利要求16所述的方法,其特征在于所述木材复合材料产品从所述碎料挤压、模铸和/或板压。
18.根据权利要求16或17所述的方法,其特征在于所述预制产品被冷却。
19.根据权利要求16至18的任何一项所述的方法,其特征在于附加塑料被添加至所述胶粘层压品废料的碎料。
20.根据权利要求16至19的任何一项所述的方法,其特征在于碎料混合物被均质化。
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2006
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105381854A (zh) * | 2015-10-20 | 2016-03-09 | 温州泓呈祥科技有限公司 | 一种工业木料垃圾的破碎处理系统 |
CN105381854B (zh) * | 2015-10-20 | 2017-09-26 | 涂瑞强 | 一种工业木料垃圾的破碎处理系统 |
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