Shamrock Plastics was founded in 1968 for the purpose of supplying custom vacuum formed parts to the local market. Since that time Shamrock Plastics has expanded and grown, to include pressure forming (an economical alternative to injection molding). This has allowed us to service international OEMs in the off-road, building, food, environmental, sports and medical industries and developing our own line of Lamplighters by Shamrock holiday yard lamp decorations. Shamrock has been one hundred percent woman –owned since 1986 by Mary Cay Westphal. Shamrock Plastics is a business dedicated to the highest standards of honesty and integrity. We have distinguished ourselves as top in the industry by our performance, namely: on time delivery in the 99% range; and a quality rating for defects per 1000 parts in the range of two one-hundredths of one percent. Call us today and you will find our “phone menu” has not changed, as you will be talking with a friendly member of our family, not a computer. It may be old fashioned, but at Shamrock Plastics we prefer to let the computers do what they were designed to do and have the people answer the telephone. We possess the flexibility to serve small companies as well as large international corporations. Regardless of your size or needs, our dedicated, experienced and courteous staff is ready to serve you. Shamrock Plastics sets itself apart from other molders by offering you personalized service, competitive pricing, prompt delivery and superior quality products. We combine experience, knowledge and applications expertise to meet the special requirements of each of our customers. We continually search the marketplace for new, innovative methods and technologies to better serve you, our customer.            “We have partnered with Shamrock Plastics for many years and found that they continually search for new materials, technologies or methods that speed up production or take cost out of the tooling”. Vince Herman – Owner Performance Pattern and Machine           “We are frequently contacted by the operations people from Shamrock, researching new, better and more efficient machine technology”. Michael Alongi – Sales Manager MAAC Machinery Corp.